Function getPageElementAtPoint

packages/overlay/src/interaction.ts:157–178

(clientX: number, clientY: number)

 * Uses elementsFromPoint to skip the interaction layer, shadow DOM host, and placeholder elements.
 */
export function getPageElementAtPoint(clientX: number, clientY: number): HTMLElement | null {
  // Check cache first — avoids expensive elementsFromPoint on small mouse movements
  const cached = getCachedElement(clientX, clientY);
  if (cached !== undefined) return cached;

  const elements = document.elementsFromPoint(clientX, clientY);
  let result: HTMLElement | null = null;

  for (const el of elements) {
    if (!(el instanceof HTMLElement)) continue;
    if (el.closest("#react-rewrite-root")) continue;
    if (el.hasAttribute("data-react-rewrite-interaction")) continue;
    if (el.hasAttribute("data-react-rewrite-placeholder")) continue;
    if (el === document.body || el === document.documentElement) continue;
    if (isFullPageElement(el)) continue;
    result = el;
    break;
  }

  setCachedElement(clientX, clientY, result);
  return result;
}

export function destroyInteraction(): void {
  document.removeEventListener("scroll", clearElementCache, true);